Car-door-operating mechanism



A. HUPP.

CAR DOOR OPERATING MECHANISM.

APPLICATION FILED JUNE 10, 1915.

Patented Dec. 28, 1920.

UNITED STATES PATENT OFFICE.

ALBERT HUPP, 01 W'ASHENGTON, DISTRICT OF COLUMBIA, ASSIGNOR TO HUPP AUTO- MATEO MAIL EXCHANGE COMPANY, OF WASHINGTON, DISTRICT OF COLUMBIA,

A CORPORATION OF DELAWARE.

CAR-DOOR-OIEERATING- MECHANISM.

Application filed June 10, 1915.

To all whom it may CO'iLCTIl Be it known that I, ALBERT HUPP, a citizen of the United States, and resident of Washington, District of Columbia, have invented certain new and useful Improvements in Car-Door-Operating Mechanism, of which the following is a specification.

T his invention relates to door opening mechanisms and more particularly to mechanisms for opening a door of a mail car to permit mail to be received or discharged. in my application Serial No. 771,041, filed May 31, 1913, I have shown and described an automatic mechanism for opening a car door and receiving and discharging mail therethrough and the present invention is an improvement over the door opening mechanism shown in said application.

The objects of the present invention are to provide a power operated mechanism for opening and closing a door and also to have the parts so arranged that the door may be opened independently of the power operated mechanism when desired. A further object is to have a door which will be positively moved to the open position from any position occupies, when the power actuated mechanism is actuated to open the door, thus insuring that the door will always be fully opened when it is desired to receive or discharge mail.

Other objects and the features of novelty will be apparent from the following description taken in connection with the accompanying drawings in which- Figure 1 is an elevation of the inner side of a mail car door with my invention applied thereto;

Fig. 2 is an enlarged section on the line 2-2 of Fig. 1; and

Fig. 3 is an outside elevation of av fragment of the door.

Referring to the drawings, 10 indicates the car floor and 11 a sliding door which is adapted to close the doorway indicated in dotted lines at 12. It will be understood that the door is mounted on the usual carriers which permit it to slide along the side of the car, to and from the closed position. An arm 13 arranged with its lower end below the floor 10 and adapted to be connected with power operated mechanism, has a fulcrum at 14 and at its upper end carries a pin 15. A rod 16 is pivoted to the door at 17 and Specification of Letters Patent.

Patented Dec. 28, 1920.

Serial No. 33,334.

provided with a recess 18 which is adapted to receive the pin 15 to form a connection between the arm 13 and the rod. The end 19 of the rod 15 is turned laterally to form a hook as clearly shown in Fig. 1. A casing 20 is arranged over the arm 16 and the upper end of the arm 13 for the purpose of protecting its parts and preventing them from being meddled with.

When the power operated mechanism (not shown), which is connected with the lower end of the arm 13, is actuated, the arm is swung to the dotted line position in Fig. 1 and the door is opened. If the rod 16 were permanently connected with the arm 13, the door could only be opened by the arm, but since it is frequently desired to manually open the door, means have been provided for disconnecting the rod 16 from the arm 19. This means comprises a rotatable member or knob 21 having a disk 22 rigidly connected therewith and a stem 22' projecting through the door and provided with a key socket 23 in its outer end. The disk 22 has an extension 24 to which a link 25 is connected the link being also connected with the arm 26 of a bell-crank lever which is fulerumed at 27 The arm 28 of this bellcrank lever has pivotally connected therewith a vertically extending link 29 having a slot 30 in the upper end thereof. The rod 16 carries a laterally projecting pin 31 which engages the slot 30. The disk 22 has a notch 32 for the bolt 33 of a lock 34, the lock normally preventing the knob 21 from being turned. The lock 34 has a key plate 35 on the outside of the door through which a key may be inserted for; the purpose of withdrawing the bolt 33 from the notch 32. WVhen the bolt has been thus. withdrawn a suitable key may be inserted in the socket 23 and the knob 21 and disk 22 thereby rotated to raise the link 29 so as to disengage the pin 15 from the recess 18. The lock 34 is preferably of the type which is commonly known as a Yale night latch and has a knob 36 by means of which the bolt 33 may be drawn from the notch 32 by a person on the inside of the car. When the rod 16 is swung upwardly to disengage it from the pin 15, the door may move to the open position and is indicated as partially open in the dotted lines in Fig. 1. It should be noted, however, that the length of the end 19 is such that if the door stands partially open and the arm 13 :is actuated by the power actuated mechanism the .pin 15 will engage the end 19 and thus draw the door to the fully open position. This insures that the door will be open when the arm 13 has been actuated and the end 19 of the rod 16 prevents the door from being moved to the closed position so long as the arm 13 remains in the dotted line position shown in Fig. 1.

When the door is closed and the parts are as shown in full lines in Fig. 1 the upper end of the slot 30 prevents the rod 16 from being lifted suiiiciently to carry the end 19 above the pin 15.

Having'thus described my invention what I claim is 1. In combination with a door, an arm adapted to be oscillated by power operated mechanism, a rod pivotally connected with the door and having a readily detachable connection with said arm, a rotatable member, connections between said member and said rod whereby "the latter may be detached from said arm by rotating the arm, and a lock for normally preventing said member from being rotated.

2. In combination with a door, an arm adapted to be oscillated by power operated mechanism, a rod pivotally connected with the door and having a hooked end whereby it is connected with said arm, and means carried by the door for disengaging said hooked end from saidarm and including a member having a pin and slot connection with the rod.

3. In combination with a door, an arm adapted to be oscillated by power operated mechanism, a rod pivotally connected with the door and having a readily detachable connection with said arm, manually operable member, and means connecting said member with-said rod and including a link having a pin and slot connection with said rod.

4. In combination with a sliding door, an arm adapted to be oscillated by power operated mechanism, a rod pivotally connected with said door and having a hooked end whereby it is connected with said arm, means for disconnecting said hooked end from said rod comprising a link movable transversely of the rod and provided with a slot, and a pin on the rod engaging the slot in said link.

In combination with a sliding door, an arm adapted to be oscillated by power operated mechanism, a rod pivot-ally connected with the door and having a hooked end whereby it is connected with said arm, and means for disconnecting said hooked end from asid arm comprising a'pin on said rod, a link provided with slot in which said pin is adapted to move, said slot being shorter than the hooked end of said rod whereby the movement of the rod is so limited that said hooked end will always engage the said arm when the latter is swung to open the door.

6. In-com'bination with a sliding door, an arm adapted to be oscillated by power operated mechanism, a connection between said arm and said door permitting the door to be moved independently of said arm but so an ranged that the door will always be moved from a closed or partially closed position to the fully open position by said arm, when the latter is actuated, said connection comprising a member pivoted on the door having a hook, and a pin on the arm associated with said hook, the hook having a projection inthe path of movement of the pin whereby the arm may move relative to the member in one direction but carries the member with it when moving in the other direction.

In testimony whereof I aifix my signature.

ALBERT HUPP. 

